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Varenikova T.A., Smirnova M.A., Doroganov V.A. CORUNDUM LIGHTWEIGHT REFRACTORIES BASED ON HYDRAULIC BINDERS Lightweight corundum products are successfully used for high-temperature insulation, applied in many industries, especially in metallurgical and refractory industries. This type of products is mainly produced by casting, which has a number of significant drawbacks. In this paper, it is proposed to use the method of vibrocompression, which would allow intensifying the technological process of production. The article presents the results of studying compositions for the preparation of corundum heat-insulating refractory materials using hydraulic binders. The main regularities of the influence of the charge components composition on-mechanical characteristics are established. The optimal compositions have been identified that meet the requirements imposed in accordance with GOST 5040-2015 for KT-1,1 and KT-1,3 grades.